G'day propfarmer,
Great stuff! I had a lot of fun during my restoration project that you can see in my avatar to the left here.
Those brackets are also used as the attachment point for the jury struts, as well as the cables you mention.
Inspect the stainless steel brackets closely whilst you can, and if in doubt replace them. if they are ok then I would reuse them, bearing in mind that your aircraft daily inspection should include a full inspection of all these stainless steel brackets - 4 on each wing, so 8 in total.
I'm no expert so take my views for what they are - an anonymous poster on a forum.
All the best,
Pud